28472409

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 49131264

約数和(自身を除く): 20658855

約数列:

[1, 3, 7, 9, 21, 41, 63, 73, 123, 151, 219, 287, 369, 453, 511, 657, 861, 1057, 1359, 1533, 2583, 2993, 3171, 4599, 6191, 8979, 9513, 11023, 18573, 20951, 26937, 33069, 43337, 55719, 62853, 77161, 99207, 130011, 188559, 231483, 390033, 451943, 694449, 1355829, 3163601, 4067487, 9490803, 28472409]

約数ペア:

[(1, 28472409), (3, 9490803), (7, 4067487), (9, 3163601), (21, 1355829), (41, 694449), (63, 451943), (73, 390033), (123, 231483), (151, 188559), (219, 130011), (287, 99207), (369, 77161), (453, 62853), (511, 55719), (657, 43337), (861, 33069), (1057, 26937), (1359, 20951), (1533, 18573), (2583, 11023), (2993, 9513), (3171, 8979), (4599, 6191)]